Further to below messages from our GT about lined pants workmanship, please recheck your conclusion on pt. 2 . Refer to manual, “ the seam allowances of shell and lining at front and back rise tacked together at length of 10 cm from waistband” we understand it is position of tacking, not sewing along from waistband till 10 cm. As the garment is lined, to sew the seam allowance together that long 5-10 cms will easily create pulling effect.